Chile

Andina Mine

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Categories

Overview

Mine TypeOpen Pit & Underground
Commodities
  • Copper
  • Molybdenum
  • Silver
Mining Method
  • Truck & Shovel / Loader
  • Block caving
Production Start... Lock
Mine Life2059
ShapshotThe Andina Division's transloading system was opened, which includes the construction of a new primary crushing station in the area known as Node 3,500 and a new ore transport system to the Cordillera plant to maintain the current level of processing.

Owners

SourceSource
CompanyInterestOwnership
Codelco Corp. (operator) 100 % Indirect
Codelco, as a productive business, grouped all the deposits (The El Teniente, Andina, Exotica, Chuquicamata and El Salvador) into a single mining, industrial and commercial corporation.

Codelco Corp. operates seven mine sites (known as “divisiones”): Chuquicamata, Ministro Hales, Radomiro Tomic, Gabriela Mistral, Salvador, Andina, El Teniente, in addition to the Ventanas Smelter and Refinery.

Contractors

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Deposit type

  • Breccia pipe / Stockwork
  • Porphyry

Summary:

The Andina mining operation consists of Río Blanco underground mine and the Sur Sur open pit mine.

Los Bronces-Rio Blanco is one of three giant Miocene to Pliocene Cu-Mo breccia/porphyry copper deposits in central Chile.

Paragenetic studies indicate main stages of veins, breccia and porphyry emplacement in the Rio Blanco and Sur-Sur sectors of the ore deposit. The stages are: (1) magnetite-actinolite alteration; (2) potassic stockwork veins; (3) Rio Blanco Magmatic Breccia and Sur-Sur Tourmaline Breccia; (4) Feldspar Porphyry; (5) Quartz Monzonite Porphyry and Don Luis Porphyry; (6) molybdenite stockwork veins; (7) chalcopyrite stockwork veins; and (8) D veins. Barren dacite and rhyolite intrusions cross-cut the ore deposit complex.

A change from potassic to phyllic alteration defines the contact between the Rio Blanco Magmatic Breccia and Sur-Sur Tounnaline Breccia. The Rio Blanco Magmatic Breccia occupies a large volume of rock within the Rio Blanco, La Union, Don Luis and Sur-Sur sectors, and extends over a vertical interval of ~2 km. The Tourmaline Breccia lies transitionally outward from the Magmatic Breccia mainly in the Sur-Sur sector. There is a 100m thick gradational contact between deep level biotite breccia and shallow-level tourmaline breccia at Sur-Sur. Paragenetic studies of breccia cement minerals in the Rio Blanco Magmatic Breccia and Sur-Sur Tounnaline Breccia reveal a similar cement infill sequence involving initial biotite and/or tounnaline precipitation at clast margins, followed by sulfate (anhydrite) and oxide (specularite) mineral phases, and in tum by chalcopyrite and magnetite.

Reserves

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Mining Methods

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Comminution

Crushers and Mills

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Processing

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Production

CommodityUnits2022202120202019201820172016
Copper t 000000000000000000000000195,531220,030193,341
Silver kg 0000000000000000000048,88355,00848,335
Molybdenum t 000000003,4894,3653,894
All production numbers are expressed as metal in concentrate.

Operational metrics

Metrics202220212020201920182017
Daily processing capacity 0000000000
Ore tonnes mined 00000000000000029,264 kdmt31,863 kdmt

Production Costs

CommodityUnits20212020201920182017
C1 cash costs Copper USD 000 000 1.85 / lb   1.64 / lb   1.4 / lb  

Financials

Units202220212020201920182017
Revenue M USD  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe 1,197   1,581  
Gross profit M USD  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe 242.4   454.8  
Pre-tax Income M USD  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe -63.4   96.3  
After-tax Income M USD  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe -4.6   19.6  

Heavy Mobile Equipment

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Personnel

Mine Management

Source Source
Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required May 20, 2023
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....................... Subscription required ....................... Subscription required Subscription required May 23, 2023
....................... Subscription required ....................... Subscription required Subscription required Nov 30, 2023
....................... Subscription required ....................... Subscription required Subscription required May 20, 2023

EmployeesYear
Subscription required 2022
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Aerial view:

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